Kasuga Takeaki, Hagiwara Hikaru, Suzuki Yoshiyuki, Asakura Tomoyuki
Rehabilitation Center, Hidaka Rehabilitation Hospital: 2204 Maniwa Yoshii-machi, Takasaki-shi, Gunma 370-2104, Japan.
Department of Rehabilitation, Gunma University Hospital, Japan.
J Phys Ther Sci. 2025 Sep;37(9):480-485. doi: 10.1589/jpts.37.480. Epub 2025 Sep 1.
[Purpose] We aimed to analyze the kinematic characteristics of the foot trajectory of the trailing limb in a crossing motion during gait when the height of an obstacle is varied. [Participants and Methods] The participants were 12 healthy adult males (age: 24.2 ± 0.9 years). The participants performed 11 tasks: normal gait and crossing an obstacle with a height ranging from 10% to 100% of the height from the floor to the knee joint crease at 10% intervals during gait. The parameters included the clearance height, foot trajectory, swing phase duration, stride, toe distance, and heel distance. [Results] In the crossing condition, the foot trajectory changed with the obstacle height, with some participants showing unimodal trajectories when the obstacle height was ≥30% of the knee joint height. The trend test results show a trend from bimodal to unimodal trajectories with increasing obstacle heights. [Conclusion] The trailing limb of a young participant's crossing motion during gait showed kinematic changes in the foot trajectory, adjusting from bimodal to unimodal as the obstacle height increased, suggesting that this may be a specific strategy for dealing with high obstacles.
[目的] 我们旨在分析在步态过程中跨越动作时，当障碍物高度变化时后肢足部轨迹的运动学特征。[参与者与方法] 参与者为12名健康成年男性（年龄：24.2±0.9岁）。参与者进行了11项任务：正常步态以及在步态过程中跨越高度从地面到膝关节褶皱高度的10%至100%，间隔为10%的障碍物。参数包括间隙高度、足部轨迹、摆动相持续时间、步幅、趾距和跟距。[结果] 在跨越条件下，足部轨迹随障碍物高度而变化，当障碍物高度≥膝关节高度的30%时，一些参与者表现出单峰轨迹。趋势检验结果显示，随着障碍物高度增加，轨迹呈现从双峰到单峰的趋势。[结论] 年轻参与者在步态过程中跨越动作的后肢足部轨迹显示出运动学变化，随着障碍物高度增加从双峰调整为单峰，这表明这可能是应对高障碍物的一种特定策略。
